first implementation of console buffer. This has to be tested first - might contain bugs

2 files changed, 34 insertions, 0 deletions

diff --git a/include/gwin/console.h b/include/gwin/console.h
index a2dde96b..850c5a57 100644
--- a/include/gwin/console.h
+++ b/include/gwin/console.h
@@ -31,6 +31,13 @@ typedef struct GConsoleObject {
 	GWindowObject	g;
 	coord_t			cx, cy;			// Cursor position
 
+	#if GWIN_CONSOLE_NEED_HISTORY
+		char*		buffer;			// buffer to store console content
+		uint16_t	last_char;		// the last rendered character
+		size_t		size;			// size of buffer
+		bool_t		store;			// shall PutChar() store into buffer
+	#endif
+
 	#if GFX_USE_OS_CHIBIOS && GWIN_CONSOLE_USE_BASESTREAM
 		struct GConsoleWindowStream_t {
 			const struct GConsoleWindowVMT_t *vmt;
@@ -82,6 +89,22 @@ GHandle gwinGConsoleCreate(GDisplay *g, GConsoleObject *gc, const GWindowInit *p
 	BaseSequentialStream *gwinConsoleGetStream(GHandle gh);
 #endif
 
+#if GWIN_CONSOLE_NEED_HISTORY
+	/**
+	 * @brief	Assing a buffer to keep track of the content while the widget is invisible.
+	 * @pre		GWIN_CONSOLE_NEED_HISTORY must be set to TRUE in your gfxconf.h
+	 *
+	 * @param[in] gh		The window handle (must be a console window)
+	 * @param[in] buffer	The pointer of the buffer that shall be used. Buffer will be
+	 *						dynamically allocated when this is NULL.
+	 * @param[in] size		Size of the buffer that has been passed. If buffer is NULL, this
+	 *						will be the size of the dynamically allocated buffer.
+	 *
+	 * @return	TRUE on success
+	 */ 
+	bool_t gwinConsoleSetBuffer(GHandle gh, void* buffer, size_t size);
+#endif
+
 /**
  * @brief   Put a character at the cursor position in the window.
  * @note	Uses the current foreground color to draw the character and fills the background using the background drawing color
diff --git a/include/gwin/options.h b/include/gwin/options.h
index 6e39d54d..c6fe14b8 100644
--- a/include/gwin/options.h
+++ b/include/gwin/options.h
@@ -106,6 +106,17 @@
 		#define GWIN_BUTTON_LAZY_RELEASE		FALSE
 	#endif
 	/**
+	 * @brief	Should the content of the console be logged or not
+	 * @details	If this feature is enable, the content of the console will be stored.
+	 *			Every content that gets printed to the console while being invisible
+	 *			will be rendered once the console is visible again. All previous written
+	 *			content will be restored too.
+	 * @details	Defaults to FALSE
+	 */
+	#ifndef GWIN_NEED_CONSOLE_HISTORY
+		#define GWIN_NEED_CONSOLE_HISTORY		FALSE
+	#endif
+	/**
 	 * @brief   Console Windows need floating point support in @p gwinPrintf
 	 * @details	Defaults to FALSE
 	 */